Thomas wall



(No Model.)

T. WALL.

BURNER FOR STREET GAR LAMPS.

No. 440,079. Patented Nov. 4, 1890.

WITNESSES: INVEIVTOH- A TTORN E Y5- we News ravens qo., worn-um,WASNWGYQN. n, c.

UNITED STATES PATENT OFFICE.

THOMAS TVALL, OF BROOKLYN, NEW YORK, ASSIGNOR TO HIMSELF AND ROBERTSEALY, OF SAME PLACE.

BURNER FOR STREET-CAR LAMPS.

SPECIFICATION forming part of Letters Patent No. 40,079, dated November4, 1890.

Application filed January 24, 1889. Serial No. 29-7 .438. (No model.)

To all whom it may concern:

Be it known that I, THOMAS WALL, of the city of Brooklyn, county ofKings, and State of New York, have invented a new and useful Improvementin Lamp-Burners, of which the following, taken in connection with theaccompanying drawings, is a full, clear, and accurate description.

In the drawings, Figure 1 represents a side View of a burner with myimprovement attached. Fig. 2 is a sectional view of my invention. Fig. 3is a side view of the screwcap of the burner as applied to my invention.Fig. 4 is a View of the locking collar or nut, constituting part of myinvention.

Similar letters of reference refer to similar parts.

My invention relates to burners for streetcar lamps; and theconstruction of the lampboxes is such that the lamp-founts are twice aslong as they are wide. The lamp-boxes have reflectors placed at an angleon the i11- side and where the length of the box is the greatest.

It is important to obtain the greatest candle-power possible, and inorder to accomplish this the burner onght to be adjusted to thelamp-fount, so that the wick-tube shall stand parallel with the lengthof the said lamp-fount.

The lamp-burners in use on street-cars are adjusted to the fount byscrew-threads cut on the lower portion of the burner and correspondingscrew-threads cut in the collar of the lamp-fount, so that when theburner is securely fastened to the lamp-fount it often happens that thewick-tube will be at an angle instead of being parallel with the lengthof the lamp-fount, as it properly should be.

The object of this invention is to construct a lamp-burner so that atall times the wicktube can be easily adjusted parallel with the lengthof the lamp-fount. I accomplish this result by making that portion ofthe burner bearing the screw-thread about twice the usual length. I makeanother part or portion, independent of the burn er, havingcorresponding screw-threads cut on the inside of it, so as to beadjusted to that portion of the burner bearing the screw-threads,answering the purpose of a locking collar or nut. The outside of theseparate portion or part is milled, so that it is more easily handledwhen it is to be adjusted.

In the drawings, A represents the part of the burner which is fitted orscrewed into the collar of thelamp-fount, abeing the screwthreadedportion thereof.

B is the detachable locking collar or nut,

containing the screw-thread I), cut on the inside and fitting into thescrew-thread a on the cap-piece A.

The operation of my inventionis as follows: The detachable nut orlocking-collar B is screwed upon the cap A. Then in order to adjust myimproved burner the burner is first screwed into the collar of thelamp-fount in the usual way. lVhen properly secured in its position, ifit is found that the wick-tube is not parallel with the length of thelampfonnt the burner is partially unscrewed from the collar of thelamp-fount and the detachable screw-threaded locking collar or nut B isscrewed or turned in an opposite direction for a short distance, and theburner is then screwed down into the collar of the lampfount. It will befound that this operation has changed the position or angle of thewicktube to the length of the lamp-fount. By renewing this operation thewick-tube can be brought parallel with the length of the lampfount.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

A lamp-burner having a screw-threaded portion, by which it is secured toa lamp, provided with a locking collar or nut working on saidscrew-threaded portion,substantially as described.

In testimony whereof I have hereunto set my hand.

THOMAS IVALL.

In presence of LoUIs W. FROST,

ROBERT SEALY.

